Frances Coppola on this:
Dear Finbold, the BIS is not "allowing banks to keep 1% of reserves in Bitcoin". It is actually severely limiting banks' exposure to Bitcoin and other Group 2 crypto assets. AFAIK no other asset class has an absolute capital exposure limit like this. https://finbold.com/bank-for-international-settlements-to-allow-banks-to-keep-1-of-reserves-in-bitcoin/
And some other Tweets of hers are along the same lines.